Nonparametric and Semiparametric Proportional Hazards Model R package NPCox version 1.3 An estimation procedure for the analysis of nonparametric proportional hazards model (e.g. h(t) = h0(t)exp(b(t)'Z)), providing estimation of b(t) and its pointwise standard errors, and semiparametric proportional hazards model (e.g. h(t) = h0(t)exp(b(t)'Z1 + c*Z2)), providing estimation of b(t), c and their standard errors. More details can be found in Lu Tian et al. (2005) <doi:10.1198/016214504000000845>. Software Depends: stats,graphics,progress Qi Yang <qiyang-sdu@outlook.com> Comprehensive R Archive Network (CRAN) Qi Yang [aut, cre], Kuan Yang [aut], Xiaoxuan Liu [ctb], Xinyuan Song [ctb] GPL-3 2024-10-14 application/tgz https://CRAN.R-project.org/package=NPCox doi:10.32614/CRAN.package.NPCox